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Electrical System
ICE/OFF/CLEAN TOGGLE SWITCH
Function
The switch is used to place the ice machine in ICE,
OFF or CLEAN mode of operation.
Specifications
Double-pole, double-throw switch. The switch is
connected into a varying low D.C. voltage circuit.
Check Procedure
NOTE: Because of a wide variation in D.C. voltage,
it is not recommended that a voltmeter be used to
check toggle switch operation.
1. Inspect the toggle switch for correct wiring.
2. Isolate the toggle switch by disconnecting all
wires from the switch, or by disconnecting the
Molex connector and removing wire #69 from
the toggle switch.
3. Check across the toggle switch terminals using a
calibrated ohm meter. Note where the wire
numbers are connected to the switch terminals,
or refer to the wiring diagram to take proper
readings.
Switch Setting Terminals Ohm Reading
66-62 Open
ICE 67-68 Closed
67-69 Open
66-62 Closed
CLEAN 67-68 Open
67-69 Closed
66-62 Open
OFF 67-68 Open
67-69 Open
4. Replace the toggle switch if ohm readings do
not match all three switch settings.
CONTROL BOARD RELAYS
Function
The control board relays energize and de-energize
system components.
Specifications
Relays are not field replaceable. There are five
relays on the control board:
Relay
Controls
#1 Water Pump
#2 Water Inlet Valve
#3 Hot Gas Valve
#4 Water Dump Valve
#5 Contactor (Self-Contained)
Contactor / Liquid Line Solenoid (Remotes)